intersects method

bool intersects(RangeBounds<C> range)

Returns whether this and the other range have at least one element in common.

Implementation

bool intersects(RangeBounds<C> range) {
  final startMatches = switch (startBound) {
    InclusiveBound(value: final thisStart) => switch (range.endBound) {
        InclusiveBound(value: final otherEnd) =>
          thisStart.compareTo(otherEnd) <= 0,
        ExclusiveBound(value: final otherEnd) =>
          thisStart.compareTo(otherEnd) < 0,
        UnboundedBound() => true,
      },
    ExclusiveBound(value: final thisStart) => switch (range.endBound) {
        InclusiveBound(value: final otherEnd) ||
        ExclusiveBound(value: final otherEnd) =>
          thisStart.compareTo(otherEnd) < 0,
        UnboundedBound() => true,
      },
    UnboundedBound() => true,
  };
  final endMatches = switch (endBound) {
    InclusiveBound(value: final thisEnd) => switch (range.startBound) {
        InclusiveBound(value: final otherStart) =>
          thisEnd.compareTo(otherStart) >= 0,
        ExclusiveBound(value: final otherStart) =>
          thisEnd.compareTo(otherStart) > 0,
        UnboundedBound() => true,
      },
    ExclusiveBound(value: final thisEnd) => switch (range.startBound) {
        InclusiveBound(value: final otherStart) ||
        ExclusiveBound(value: final otherStart) =>
          thisEnd.compareTo(otherStart) > 0,
        UnboundedBound() => true,
      },
    UnboundedBound() => true,
  };
  return startMatches && endMatches;
}